| Dubuque to Leopoldsburg | 4,246.25 mi (6,833.68 km) |
| Dubuque to Lessines | 4,209.42 mi (6,774.41 km) |
| Dubuque to Leuven | 4,234.91 mi (6,815.43 km) |
| Dubuque to Lichtervelde | 4,171.93 mi (6,714.08 km) |
| Dubuque to Liedekerke | 4,212.99 mi (6,780.15 km) |
| Dubuque to Liege | 4,275.93 mi (6,881.44 km) |
| Dubuque to Lierre | 4,220.62 mi (6,792.44 km) |
| Dubuque to Lille | 4,226.53 mi (6,801.95 km) |
| Dubuque to Lint | 4,218.21 mi (6,788.56 km) |
| Dubuque to Lochristi | 4,195.13 mi (6,751.41 km) |
| Dubuque to Lokeren | 4,200.61 mi (6,760.23 km) |
| Dubuque to Lommel | 4,244.02 mi (6,830.10 km) |
| Dubuque to Londerzeel | 4,215.92 mi (6,784.86 km) |
| Dubuque to Louvain-la-Neuve | 4,235.79 mi (6,816.84 km) |
| Dubuque to Lovendegem | 4,186.59 mi (6,737.67 km) |
